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https://issues.apache.org/jira/browse/WICKET-2049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12677146#action_12677146
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David commented on WICKET-2049:
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Nice fix, thanks!
> beforeRender not called for behaviour added to ComponentTag
> -----------------------------------------------------------
>
> Key: WICKET-2049
> URL: https://issues.apache.org/jira/browse/WICKET-2049
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.3.5
> Reporter: David
> Assignee: Juergen Donnerstag
> Fix For: 1.4-RC3
>
> Attachments: ComponentTagAddBehaviourBug.zip,
> HiddenComponentsMarkupFilter.java
>
>
> When adding a IMarkupFilter and adding a behaviour to the ComponentTag, the
> beforeRender method is never called, only onComponentTag will be called, but
> by then it is too late to modify the component.
> Usecase: I would like to make components hidden if the markup contains
> wicket:hidden="hidden". For this i need to modify the components visiblitiy
> depending on if the markup contains that attribute.
> The attached quickstart will never reach the
> System.out.println("beforeRender: should hide component"); in
> HiddenComponentMarkupFilter
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